57791131 has 2 divisors, whose sum is σ = 57791132. Its totient is φ = 57791130.

The previous prime is 57791093. The next prime is 57791207. The reversal of 57791131 is 13119775.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57791131 - 2¹⁷ = 57660059 is a prime.

It is a super-2 number, since 2×57791131² = 6679629644518322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57791431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28895565 + 28895566.

It is an arithmetic number, because the mean of its divisors is an integer number (28895566).

Almost surely, 2^57791131 is an apocalyptic number.

57791131 is a deficient number, since it is larger than the sum of its proper divisors (1).

57791131 is an equidigital number, since it uses as much as digits as its factorization.

57791131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6615, while the sum is 34.

The square root of 57791131 is about 7602.0478162137. The cubic root of 57791131 is about 386.6224464723.

The spelling of 57791131 in words is "fifty-seven million, seven hundred ninety-one thousand, one hundred thirty-one".